CVE-2021-1782
Published: November 3, 2021
Official Description
Apple iOS, iPadOs, macOS, watchOS, and tvOS contain a race condition vulnerability that may allow a malicious application to elevate privileges.
CISA KEV Advisory
Apple Multiple Products Race Condition Vulnerability
Apple iOS, iPadOs, macOS, watchOS, and tvOS contain a race condition vulnerability that may allow a malicious application to elevate privileges.
Apply updates per vendor instructions.
Risk Analysis
This high-severity race condition vulnerability affects Apple iOS, iPadOS, macOS, watchOS, and tvOS. A malicious application could exploit this flaw to elevate its privileges. Its presence in CISA's KEV catalog indicates confirmed exploitation.
Active exploitation of this vulnerability has been observed in the wild, as confirmed by its inclusion in CISA's KEV catalog. Exploitation requires a malicious application to be present on the device.
Apply all available security updates for Apple iOS, iPadOS, macOS, watchOS, and tvOS. Users should only install applications from trusted sources and maintain up-to-date operating systems.
Technical Analysis
CVE-2021-1782 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-1782 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-1782 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1